/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.solr.util.plugin;

import java.util.Map;

import org.apache.solr.common.util.DOMUtil;
import org.w3c.dom.Node;

/**
 * @version $Id: NamedListPluginLoader.java 555343 2007-07-11 17:46:25Z hossman
 *          $
 * @since solr 1.3
 */
public class NamedListPluginLoader<T extends NamedListInitializedPlugin>
		extends AbstractPluginLoader<T> {
	private final Map<String, T> registry;

	public NamedListPluginLoader(String name, Map<String, T> map) {
		super(name);
		registry = map;
	}

	@Override
	protected void init(T plugin, Node node) throws Exception {
		plugin.init(DOMUtil.childNodesToNamedList(node));
	}

	@Override
	protected T register(String name, T plugin) throws Exception {
		if (registry != null) {
			return registry.put(name, plugin);
		}
		return null;
	}
}
